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Cincinnati, OH, United States

Haase M.R.,580 Engineering Research Center | Alvarez N.T.,580 Engineering Research Center | Malik R.,580 Engineering Research Center | Schulz M.,580 Engineering Research Center | Shanov V.,580 Engineering Research Center
Journal of Nanoparticle Research | Year: 2015

Carbon nanotubes (CNTs) are a promising material for many applications, due to their extraordinary properties. Some of these properties vary in relation to the diameter of the nanotubes; thus, precise control of CNT diameter can be critical. Porous anodic alumina (PAA) membranes have been successfully used to template electrodeposited catalyst. However, the catalysts used in CNT synthesis are frequently deposited with more precise techniques, such as electron beam deposition. We test the efficacy of PAA as a template for electron beam-deposited catalyst by studying the diameter distribution of CNTs grown catalyst of various thicknesses supported by PAA. These are then compared by ANOVA to the diameter distributions of CNTs grown on metal catalyst supported by a conventional alumina film. These results also allow a unified description of two templating effects, the more common particles-in-pores model, and the recently described particles-between-pores. © 2015, Springer Science+Business Media Dordrecht. Source

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